<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
        <!-- 输入框和按钮 -->
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query"
                 clearable @clear="getGoodsList">

                    <el-button slot="append" icon="el-icon-search"
                     @click="getGoodsList"></el-button>

                </el-input>    
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="goAddPage">添加商品</el-button>
            </el-col>
        </el-row>

        <!-- 表格 -->
        <el-table :data="goodslist" border stripe >
          <el-table-column type="index"></el-table-column>
          <el-table-column label="商品名称" prop="goods_name"></el-table-column>
          <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
          <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
          <el-table-column label="创建时间" prop="add_time" width="140px">
            <template slot-scope="scope">
                {{scope.row.add_time | dateFormat}}
            </template>
          </el-table-column>
          <el-table-column label="操作"  width="130px">
            <template slot-scope="scope">
                <el-button type="primary" title="编辑" icon="el-icon-edit"
                 size="mini"></el-button>
                <el-button type="danger" title="删除" icon="el-icon-delete"
                 size="mini" @click="removeById(scope.row.goods_id)"></el-button>
            </template>
          </el-table-column>
        </el-table>

        <!-- 分页器 -->
        <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="100"
        layout="total, sizes, prev, pager, next, jumper" :total="total" background>

        </el-pagination>
    </el-card>


  </div>
</template>

<script>
export default {
    data() {
        return {
            // 查询参数对象
            queryInfo: {
                // 查询参数
                query: '',
                // 当前页码
                pagenum: 1,
                // 每页显示条数
                pagesize: 5,  
            },
            // 商品列表
            goodslist:[],
            // 总条数
            total: 0
        }
    },
    created() {
        this.getGoodsList()
    },
    methods: {
        // 根据分页获取商品列表数据
        async getGoodsList() {
            const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
            if (res.meta.status !== 200) {
                return this.$message.error('获取失败')
            }
            this.total = res.data.total
            this.goodslist = res.data.goods
            this.$message.success('获取成功')
            // console.log(res.data);
        },
        // 每页多少条数据改变时 每页 ${newSize} 条
        handleSizeChange(newSize) {
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 当前页改变时的函数 当前页: ${newPage}
        handleCurrentChange(newPage) {
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        // 点击删除按钮 删除商品
        removeById(goods_id) {
            this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(async () => {
            const { data:res } = await this.$http.delete('goods/' + goods_id)
            if (res.meta.status !== 200) {
            return this.$message.error('删除失败')
            }
            this.getGoodsList()
            this.$message({
             type: 'success',
             message: '删除成功!'
            });
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          });          
        });
        },
        // 点击添加商品 跳转到xxx
        goAddPage() {
            this.$router.push('/goods/add')
        }
    }
}
</script>

<style lang="less" scoped>
</style>